./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-ext-properties/960521-1_1_false-valid-deref.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_c75dcbf2-0101-47d2-b023-53e5b7ecca34/bin-2019/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_c75dcbf2-0101-47d2-b023-53e5b7ecca34/bin-2019/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_c75dcbf2-0101-47d2-b023-53e5b7ecca34/bin-2019/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_c75dcbf2-0101-47d2-b023-53e5b7ecca34/bin-2019/ukojak/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext-properties/960521-1_1_false-valid-deref.i -s /tmp/vcloud-vcloud-master/worker/working_dir_c75dcbf2-0101-47d2-b023-53e5b7ecca34/bin-2019/ukojak/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_c75dcbf2-0101-47d2-b023-53e5b7ecca34/bin-2019/ukojak --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7354a3a47c288bc420443262c04c6da582043077 ............................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-02 00:14:18,271 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 00:14:18,272 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 00:14:18,278 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 00:14:18,279 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 00:14:18,279 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 00:14:18,280 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 00:14:18,280 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 00:14:18,281 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 00:14:18,282 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 00:14:18,282 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 00:14:18,282 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 00:14:18,283 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 00:14:18,283 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 00:14:18,284 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 00:14:18,284 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 00:14:18,284 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 00:14:18,285 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 00:14:18,286 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 00:14:18,287 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 00:14:18,287 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 00:14:18,288 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 00:14:18,289 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 00:14:18,289 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 00:14:18,289 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 00:14:18,289 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 00:14:18,290 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 00:14:18,290 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 00:14:18,291 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 00:14:18,291 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 00:14:18,291 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 00:14:18,292 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 00:14:18,292 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 00:14:18,292 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 00:14:18,292 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 00:14:18,292 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 00:14:18,293 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_c75dcbf2-0101-47d2-b023-53e5b7ecca34/bin-2019/ukojak/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf [2018-12-02 00:14:18,299 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 00:14:18,300 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 00:14:18,300 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-02 00:14:18,300 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-02 00:14:18,300 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 00:14:18,300 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-02 00:14:18,301 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-02 00:14:18,301 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-02 00:14:18,301 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-02 00:14:18,301 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 00:14:18,301 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-12-02 00:14:18,301 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-12-02 00:14:18,301 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-12-02 00:14:18,301 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-02 00:14:18,301 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-02 00:14:18,301 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-02 00:14:18,301 INFO L131 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2018-12-02 00:14:18,301 INFO L133 SettingsManager]: * Timeout in seconds=1000000 [2018-12-02 00:14:18,301 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 00:14:18,302 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-02 00:14:18,302 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2018-12-02 00:14:18,302 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 00:14:18,302 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-02 00:14:18,302 INFO L133 SettingsManager]: * Trace refinement strategy=PENGUIN [2018-12-02 00:14:18,302 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-02 00:14:18,302 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_c75dcbf2-0101-47d2-b023-53e5b7ecca34/bin-2019/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7354a3a47c288bc420443262c04c6da582043077 [2018-12-02 00:14:18,319 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 00:14:18,328 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 00:14:18,331 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 00:14:18,332 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 00:14:18,332 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 00:14:18,333 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_c75dcbf2-0101-47d2-b023-53e5b7ecca34/bin-2019/ukojak/../../sv-benchmarks/c/list-ext-properties/960521-1_1_false-valid-deref.i [2018-12-02 00:14:18,373 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c75dcbf2-0101-47d2-b023-53e5b7ecca34/bin-2019/ukojak/data/3dd23f244/a3c3c0fe02a448db88166c6afd63600b/FLAG35b560f78 [2018-12-02 00:14:18,729 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 00:14:18,730 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_c75dcbf2-0101-47d2-b023-53e5b7ecca34/sv-benchmarks/c/list-ext-properties/960521-1_1_false-valid-deref.i [2018-12-02 00:14:18,735 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c75dcbf2-0101-47d2-b023-53e5b7ecca34/bin-2019/ukojak/data/3dd23f244/a3c3c0fe02a448db88166c6afd63600b/FLAG35b560f78 [2018-12-02 00:14:19,111 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_c75dcbf2-0101-47d2-b023-53e5b7ecca34/bin-2019/ukojak/data/3dd23f244/a3c3c0fe02a448db88166c6afd63600b [2018-12-02 00:14:19,113 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 00:14:19,115 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-02 00:14:19,115 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 00:14:19,115 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 00:14:19,117 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 00:14:19,118 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:14:19" (1/1) ... [2018-12-02 00:14:19,120 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12cd9e62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:14:19, skipping insertion in model container [2018-12-02 00:14:19,120 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:14:19" (1/1) ... [2018-12-02 00:14:19,124 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 00:14:19,147 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 00:14:19,316 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 00:14:19,323 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 00:14:19,379 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 00:14:19,398 INFO L195 MainTranslator]: Completed translation [2018-12-02 00:14:19,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:14:19 WrapperNode [2018-12-02 00:14:19,398 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 00:14:19,399 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-02 00:14:19,399 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-02 00:14:19,399 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-02 00:14:19,404 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:14:19" (1/1) ... [2018-12-02 00:14:19,411 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:14:19" (1/1) ... [2018-12-02 00:14:19,423 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-02 00:14:19,423 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 00:14:19,423 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 00:14:19,423 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 00:14:19,429 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:14:19" (1/1) ... [2018-12-02 00:14:19,429 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:14:19" (1/1) ... [2018-12-02 00:14:19,430 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:14:19" (1/1) ... [2018-12-02 00:14:19,431 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:14:19" (1/1) ... [2018-12-02 00:14:19,434 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:14:19" (1/1) ... [2018-12-02 00:14:19,436 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:14:19" (1/1) ... [2018-12-02 00:14:19,437 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:14:19" (1/1) ... [2018-12-02 00:14:19,438 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 00:14:19,438 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 00:14:19,438 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 00:14:19,438 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 00:14:19,439 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:14:19" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c75dcbf2-0101-47d2-b023-53e5b7ecca34/bin-2019/ukojak/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2018-12-02 00:14:19,470 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-02 00:14:19,470 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-02 00:14:19,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-02 00:14:19,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-02 00:14:19,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 00:14:19,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 00:14:19,655 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 00:14:19,655 INFO L280 CfgBuilder]: Removed 9 assue(true) statements. [2018-12-02 00:14:19,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:14:19 BoogieIcfgContainer [2018-12-02 00:14:19,656 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 00:14:19,656 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2018-12-02 00:14:19,656 INFO L271 PluginConnector]: Initializing CodeCheck... [2018-12-02 00:14:19,666 INFO L276 PluginConnector]: CodeCheck initialized [2018-12-02 00:14:19,666 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:14:19" (1/1) ... [2018-12-02 00:14:19,675 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 00:14:19,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 00:14:19,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 39 states and 43 transitions. [2018-12-02 00:14:19,702 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2018-12-02 00:14:19,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-12-02 00:14:19,704 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-02 00:14:19,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 00:14:19,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 00:14:19,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 00:14:19,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 39 states and 42 transitions. [2018-12-02 00:14:19,787 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2018-12-02 00:14:19,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-12-02 00:14:19,787 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-02 00:14:19,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 00:14:19,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 00:14:19,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 00:14:19,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 38 states and 41 transitions. [2018-12-02 00:14:19,840 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2018-12-02 00:14:19,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-12-02 00:14:19,840 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-02 00:14:19,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 00:14:19,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 00:14:19,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 00:14:19,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 37 states and 40 transitions. [2018-12-02 00:14:19,970 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2018-12-02 00:14:19,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-12-02 00:14:19,970 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-02 00:14:19,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 00:14:20,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 00:14:20,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 00:14:20,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 36 states and 39 transitions. [2018-12-02 00:14:20,078 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2018-12-02 00:14:20,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-12-02 00:14:20,078 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-02 00:14:20,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 00:14:20,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 00:14:20,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 00:14:20,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 38 states and 42 transitions. [2018-12-02 00:14:20,470 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2018-12-02 00:14:20,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-12-02 00:14:20,470 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-02 00:14:20,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 00:14:20,551 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 00:14:21,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 00:14:21,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 45 states and 52 transitions. [2018-12-02 00:14:21,086 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2018-12-02 00:14:21,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-02 00:14:21,088 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-02 00:14:21,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 00:14:21,124 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-02 00:14:21,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 00:14:21,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 49 states and 60 transitions. [2018-12-02 00:14:21,584 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 60 transitions. [2018-12-02 00:14:21,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-02 00:14:21,584 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-02 00:14:21,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 00:14:21,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 00:14:21,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 00:14:21,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 00:14:21,631 WARN L497 CodeCheckObserver]: This program is UNSAFE, Check terminated with 8 iterations. [2018-12-02 00:14:21,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 02.12 12:14:21 ImpRootNode [2018-12-02 00:14:21,658 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2018-12-02 00:14:21,658 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-02 00:14:21,658 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-02 00:14:21,659 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-02 00:14:21,659 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:14:19" (3/4) ... [2018-12-02 00:14:21,661 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-02 00:14:21,701 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_c75dcbf2-0101-47d2-b023-53e5b7ecca34/bin-2019/ukojak/witness.graphml [2018-12-02 00:14:21,701 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-02 00:14:21,702 INFO L168 Benchmark]: Toolchain (without parser) took 2588.35 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 116.9 MB). Free memory was 949.5 MB in the beginning and 879.7 MB in the end (delta: 69.9 MB). Peak memory consumption was 186.8 MB. Max. memory is 11.5 GB. [2018-12-02 00:14:21,703 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 00:14:21,703 INFO L168 Benchmark]: CACSL2BoogieTranslator took 283.22 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 116.9 MB). Free memory was 949.5 MB in the beginning and 1.1 GB in the end (delta: -154.2 MB). Peak memory consumption was 24.4 MB. Max. memory is 11.5 GB. [2018-12-02 00:14:21,704 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.66 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-12-02 00:14:21,704 INFO L168 Benchmark]: Boogie Preprocessor took 14.81 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 00:14:21,705 INFO L168 Benchmark]: RCFGBuilder took 217.28 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.6 MB). Peak memory consumption was 24.6 MB. Max. memory is 11.5 GB. [2018-12-02 00:14:21,705 INFO L168 Benchmark]: CodeCheck took 2002.14 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 883.1 MB in the end (delta: 193.4 MB). Peak memory consumption was 193.4 MB. Max. memory is 11.5 GB. [2018-12-02 00:14:21,706 INFO L168 Benchmark]: Witness Printer took 43.35 ms. Allocated memory is still 1.1 GB. Free memory was 883.1 MB in the beginning and 879.7 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 11.5 GB. [2018-12-02 00:14:21,710 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 1 procedures, 45 locations, 17 error locations. UNSAFE Result, 1.9s OverallTime, 8 OverallIterations, 0 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 648 SDtfs, 228 SDslu, 120 SDs, 0 SdLazy, 1420 SolverSat, 536 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 392 GetRequests, 312 SyntacticMatches, 4 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1940 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 57 NumberOfCodeBlocks, 57 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 1182 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 6 PerfectInterpolantSequences, 2/3 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - CounterExampleResult [Line: 640]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L619] int *a, *b; [L620] int n; [L632] n = 1 VAL [a={0:0}, b={0:0}, n=1] [L633] COND FALSE !(__VERIFIER_nondet_int() && n < 30) [L636] a = malloc(n * sizeof(*a)) [L637] b = malloc(n * sizeof(*b)) [L638] EXPR b++ VAL [a={2:0}, b={6:4}, n=1] [L638] *b++ = 0 [L624] int i; [L625] i = 0 VAL [a={2:0}, b={6:4}, n=1] [L625] COND TRUE i < n VAL [a={2:0}, b={6:4}, n=1] [L626] a[i] = n [L625] i++ VAL [a={2:0}, b={6:4}, n=1] [L625] COND FALSE !(i < n) [L627] i = 0 VAL [a={2:0}, b={6:4}, n=1] [L627] COND FALSE !(i < n - 1) VAL [a={2:0}, b={6:4}, n=1] [L640] b[-2] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 283.22 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 116.9 MB). Free memory was 949.5 MB in the beginning and 1.1 GB in the end (delta: -154.2 MB). Peak memory consumption was 24.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 24.66 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 14.81 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 217.28 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.6 MB). Peak memory consumption was 24.6 MB. Max. memory is 11.5 GB. * CodeCheck took 2002.14 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 883.1 MB in the end (delta: 193.4 MB). Peak memory consumption was 193.4 MB. Max. memory is 11.5 GB. * Witness Printer took 43.35 ms. Allocated memory is still 1.1 GB. Free memory was 883.1 MB in the beginning and 879.7 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 11.5 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...